On July 16, 1993, about 1100 central daylight time, a Grumman G164B airplane, N2008, sustained substantial damage when it nosed over while landing at a private farm strip near Wyndmere, North Dakota. The solo commercial pilot was not injured. Visual meteorological conditions prevailed for the local, aerial application flight which operated under 14 CFR Part 137. The pilot returned from an aerial application flight, and attempted to land on a grass strip. According to the pilot's statement, he neglected to take into consideration the condition of the landing strip due to the amount of rain which had fallen in the area over the past few days. While landing, the airplane's main landing gear became mired in the mud during the landing roll, and the airplane nosed over. The pilot did have the option of landing on an asphalt runway, but states he decided to land on the grass strip in an effort to try and save the airplane's tires.